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Egyptian Journal of Biological Pest Control

Table 3 Cost of release of biocontrol agents for the management of C. punctiferalis in guava during rainy season, 2020

From: Evaluation of augmentative biological control options against fruit and shoot borer, Conogethes punctiferalis (Guenée) (Lepidoptera: Crambidae) in guava in India

Treatments

Cost of protection (US $/acre)*

Increase in yield over control (MT)

Gross income over control# (US $/acre)

Net income over control (US $ /acre)

T. chilonis—1000 parasitized eggs/tree

33.36

1.10

198.89

165.52

T. chilonis—1500 parasitized eggs/tree

41.32

1.37

247.71

206.39

T. chilonis—2000 parasitized eggs/tree

49.28

1.70

307.37

258.10

C. blackburni—100 adults/tree

972.12

0.34

61.47

− 910.64

C. blackburni—150 adults/tree

1449.45

0.47

84.98

− 1364.47

C. blackburni—200 adults/tree

1926.78

0.70

126.57

− 1800.21

Untreated control

–

–

–

–

  1. *Cost of protection (cost of tricho card = 0.60 US $ per card; cost of C. blackburni culture = 1.81 US $ per 100 adults; labour charges = 4.36 US $/person/day); #Market price of guava = 0.18 US $ per kg
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